变量在的值怎么赋予URL地址

变量在的值如何赋予URL地址
代码片段:
<%
Dim   isInOut
isInOut   =   Request( "InOut ")
%>
<%
Response.Write   " <script   language=javascript> alert( '记帐成功! '); "
Response.Write   "window.document.location.href= 'Pay_Add.asp?InOut=(这里怎么表达isInOut的值) '; "(在这里如何把上面isInout的值赋予给这里的Inout)
Response.Write   " </script> "  
End   Sub
%>
Inout是URL地址传递过的不同的值

------解决方案--------------------
Response.Write "window.document.location.href= 'Pay_Add.asp?InOut= "&isInOut& " '; "